A bearing assembly comprises a bearing wheel with a rotational axis, the bearing wheel including and extending radially between an inner surface and an outer surface, wherein the inner surface at least partially forms a bore, the bore extends axially through the bearing wheel along the rotational axis, and the bore has a cross-sectional geometry configured to receive a rotatable shaft with a complementary cross-sectional geometry, and wherein the outer surface extends circumferentially around the rotational axis, and the outer surface has a circular cross-sectional geometry. The bearing assembly also comprises a bearing collar comprising a collar base and a collar mount, wherein the collar base includes an inner surface configured to circumscribe and slidingly engage the outer surface of the bearing wheel, wherein the collar mount projects radially out from collar base to a distal mount end, and wherein a plurality of mounting apertures at the distal mount end extend axially through the collar mount, and the mounting apertures are configured to respectively receive fasteners for securing the collar mount to a stationary structural member.